1. Danish cannabis policy in practice: The closing of ‘Pusher Street’ and the cannabis market in Copenhagen;Asmussen,2007
2. Unpacking black boxes: Mechanisms and theory building in evaluation;Astbury;American Journal of Evaluation,2010
3. Bergen op Zoom-Roosendaal Drugsscan 2011;Beke,2012
4. Coffee shopbezoekers Terneuzen najaar 2009;Bieleman,2009
5. Coffeeshops in Nederland 2014 Aantallen coffeeshops en gemeentelijk beleid 1999–2014;Bieleman,2015